Messages in this thread | | | Date | Tue, 31 Mar 2009 10:35:55 -0700 (PDT) | From | David Rientjes <> | Subject | Re: [patch 1/3] slub: add per-cache slab thrash ratio |
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On Tue, 31 Mar 2009, Christoph Lameter wrote:
> > I'd agree that it should be cleared if the tunable had object units > > instead of a ratio, but the ratio simply applies to any given order. > > Right but resetting the order usually has a significant impact on the > threashing behavior (if it exists). Why would we keep the threshing ratio > that was calculated for another slab configuration? >
Either the default thrashing ratio is being used and is unchanged from boot time in which case it will still apply to the new order, or the ratio has already been changed and userspace is responsible for tuning it again as the result of the new slab size.
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